[thirdparty/openssl.git] / rsaref / rsaref.c

/* rsaref/rsaref.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 * 
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 * 
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from 
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 * 
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * 
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

#include <stdio.h>
#include "cryptlib.h"
#include "bn.h"
#include "rsa.h"
#include "rsaref.h"
#include "rand.h"

/* 
 * RSAREFerr(RSAREF_F_RSA_REF_BN2BIN,RSAREF_R_CONTENT_ENCODING);
 * RSAREFerr(RSAREF_F_RSA_REF_PRIVATE_DECRYPT,RSAREF_R_DATA);
 * RSAREFerr(RSAREF_F_RSA_REF_PRIVATE_ENCRYPT,RSAREF_R_DIGEST_ALGORITHM);
 * RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_DECRYPT,RSAREF_R_ENCODING);
 * RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_KEY);
 * RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_KEY_ENCODING);
 * RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_LEN);
 * RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_MODULUS_LEN);
 * RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_NEED_RANDOM);
 * RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_PRIVATE_KEY);
 * RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_PUBLIC_KEY);
 * RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_SIGNATURE);
 * RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_SIGNATURE_ENCODING);
 * RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_ENCRYPTION_ALGORITHM);
 * RSAREFerr(RSAREF_F_RSAREF_BN2BIN,ERR_R_BN_LIB);
 */

#ifndef NOPROTO
static int RSAref_bn2bin(BIGNUM * from, unsigned char* to, int max);
#ifdef undef
static BIGNUM* RSAref_bin2bn(unsigned char* from, BIGNUM * to, int max);
#endif
static int RSAref_Public_eay2ref(RSA * from, RSArefPublicKey * to);
static int RSAref_Private_eay2ref(RSA * from, RSArefPrivateKey * to);
int RSA_ref_private_decrypt(int len, unsigned char *from,
	unsigned char *to, RSA *rsa, int padding);
int RSA_ref_private_encrypt(int len, unsigned char *from,
	unsigned char *to, RSA *rsa, int padding);
int RSA_ref_public_encrypt(int len, unsigned char *from,
	unsigned char *to, RSA *rsa, int padding);
int RSA_ref_public_decrypt(int len, unsigned char *from,
	unsigned char *to, RSA *rsa, int padding);
static int BN_ref_mod_exp(BIGNUM *r,BIGNUM *a,BIGNUM *p,BIGNUM *m, BN_CTX *ctx);
static int RSA_ref_mod_exp(BIGNUM *r0, BIGNUM *I, RSA *rsa);
#else

static int RSAref_bn2bin();
#ifdef undef
static BIGNUM* RSAref_bin2bn();
#endif
static int RSAref_Public_eay2ref();
static int RSAref_Private_eay2ref();
static int BN_ref_mod_exp();
static int RSA_ref_mod_exp();
int RSA_ref_private_decrypt();
int RSA_ref_private_encrypt();
int RSA_ref_public_encrypt();
int RSA_ref_public_decrypt();
static int BN_ref_mod_exp();
static int RSA_ref_mod_exp();
#endif

static RSA_METHOD rsa_pkcs1_ref_meth={
	"RSAref PKCS#1 RSA",
	RSA_ref_public_encrypt,
	RSA_ref_public_decrypt,
	RSA_ref_private_encrypt,
	RSA_ref_private_decrypt,
	RSA_ref_mod_exp,
	BN_ref_mod_exp,
	NULL,
	NULL,
	0,
	NULL,
	};

RSA_METHOD *RSA_PKCS1_RSAref()
	{
	return(&rsa_pkcs1_ref_meth);
	}

static int RSA_ref_mod_exp(r0, I, rsa)
BIGNUM *r0;
BIGNUM *I;
RSA *rsa;
	{
	RSAREFerr(RSAREF_F_RSA_REF_MOD_EXP,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
	return(0);
	}

static int BN_ref_mod_exp(r,a,p,m,ctx)
BIGNUM *r,*a,*p,*m;
BN_CTX *ctx;
	{
	RSAREFerr(RSAREF_F_BN_REF_MOD_EXP,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
	return(0);
	}

static int RSAref_bn2bin(from,to,max)
BIGNUM *from;
unsigned char *to; /* [max] */
int max;
	{
	int i;

	i=BN_num_bytes(from);
	if (i > max)
		{
		RSAREFerr(RSAREF_F_RSAREF_BN2BIN,RSAREF_R_LEN);
		return(0);
		}

	memset(to,0,(unsigned int)max);
	if (!BN_bn2bin(from,&(to[max-i])))
		return(0);
	return(1);
	}

#ifdef undef
static BIGNUM *RSAref_bin2bn(from,to,max)
unsigned char *from; /* [max] */
BIGNUM *to;
int max;
	{
	int i;
	BIGNUM *ret;

	for (i=0; i<max; i++)
		if (from[i]) break;

	ret=BN_bin2bn(&(from[i]),max-i,to);
	return(ret);
	}

static int RSAref_Public_ref2eay(from,to)
RSArefPublicKey *from;
RSA *to;
	{
	to->n=RSAref_bin2bn(from->m,NULL,RSAref_MAX_LEN);
	to->e=RSAref_bin2bn(from->e,NULL,RSAref_MAX_LEN);
	if ((to->n == NULL) || (to->e == NULL)) return(0);
	return(1);
	}
#endif

static int RSAref_Public_eay2ref(from,to)
RSA *from;
RSArefPublicKey *to;
	{
	to->bits=BN_num_bits(from->n);
	if (!RSAref_bn2bin(from->n,to->m,RSAref_MAX_LEN)) return(0);
	if (!RSAref_bn2bin(from->e,to->e,RSAref_MAX_LEN)) return(0);
	return(1);
	}

#ifdef undef
static int RSAref_Private_ref2eay(from,to)
RSArefPrivateKey *from;
RSA *to;
	{
	if ((to->n=RSAref_bin2bn(from->m,NULL,RSAref_MAX_LEN)) == NULL)
		return(0);
	if ((to->e=RSAref_bin2bn(from->e,NULL,RSAref_MAX_LEN)) == NULL)
		return(0);
	if ((to->d=RSAref_bin2bn(from->d,NULL,RSAref_MAX_LEN)) == NULL)
		return(0);
	if ((to->p=RSAref_bin2bn(from->prime[0],NULL,RSAref_MAX_PLEN)) == NULL)
		return(0);
	if ((to->q=RSAref_bin2bn(from->prime[1],NULL,RSAref_MAX_PLEN)) == NULL)
		return(0);
	if ((to->dmp1=RSAref_bin2bn(from->pexp[0],NULL,RSAref_MAX_PLEN))
		== NULL)
		return(0);
	if ((to->dmq1=RSAref_bin2bn(from->pexp[1],NULL,RSAref_MAX_PLEN))
		== NULL)
		return(0);
	if ((to->iqmp=RSAref_bin2bn(from->coef,NULL,RSAref_MAX_PLEN)) == NULL)
		return(0);
	return(1);
	}
#endif

static int RSAref_Private_eay2ref(from,to)
RSA *from;
RSArefPrivateKey *to;
	{
	to->bits=BN_num_bits(from->n);
	if (!RSAref_bn2bin(from->n,to->m,RSAref_MAX_LEN)) return(0);
	if (!RSAref_bn2bin(from->e,to->e,RSAref_MAX_LEN)) return(0);
	if (!RSAref_bn2bin(from->d,to->d,RSAref_MAX_LEN)) return(0);
	if (!RSAref_bn2bin(from->p,to->prime[0],RSAref_MAX_PLEN)) return(0);
	if (!RSAref_bn2bin(from->q,to->prime[1],RSAref_MAX_PLEN)) return(0);
	if (!RSAref_bn2bin(from->dmp1,to->pexp[0],RSAref_MAX_PLEN)) return(0);
	if (!RSAref_bn2bin(from->dmq1,to->pexp[1],RSAref_MAX_PLEN)) return(0);
	if (!RSAref_bn2bin(from->iqmp,to->coef,RSAref_MAX_PLEN)) return(0);
	return(1);
	}

int RSA_ref_private_decrypt(len,from,to,rsa,padding)
int len;
unsigned char *from,*to;
RSA *rsa;
int padding;
	{
	int i,outlen= -1;
	RSArefPrivateKey RSAkey;

	if (!RSAref_Private_eay2ref(rsa,&RSAkey))
		goto err;
	if ((i=RSAPrivateDecrypt(to,&outlen,from,len,&RSAkey)) != 0)
		{
		RSAREFerr(RSAREF_F_RSA_REF_PRIVATE_DECRYPT,i);
		outlen= -1;
		}
err:
	memset(&RSAkey,0,sizeof(RSAkey));
	return(outlen);
	}

int RSA_ref_private_encrypt(len,from,to,rsa,padding)
int len;
unsigned char *from,*to;
RSA *rsa;
int padding;
	{
	int i,outlen= -1;
	RSArefPrivateKey RSAkey;

	if (!RSAref_Private_eay2ref(rsa,&RSAkey))
		goto err;
	if ((i=RSAPrivateEncrypt(to,&outlen,from,len,&RSAkey)) != 0)
		{
		RSAREFerr(RSAREF_F_RSA_REF_PRIVATE_ENCRYPT,i);
		outlen= -1;
		}
err:
	memset(&RSAkey,0,sizeof(RSAkey));
	return(outlen);
	}

int RSA_ref_public_decrypt(len,from,to,rsa,padding)
int len;
unsigned char *from,*to;
RSA *rsa;
int padding;
	{
	int i,outlen= -1;
	RSArefPublicKey RSAkey;

	if (!RSAref_Public_eay2ref(rsa,&RSAkey))
		goto err;
	if ((i=RSAPublicDecrypt(to,&outlen,from,len,&RSAkey)) != 0)
		{
		RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_DECRYPT,i);
		outlen= -1;
		}
err:
	memset(&RSAkey,0,sizeof(RSAkey));
	return(outlen);
	}

int RSA_ref_public_encrypt(len,from,to,rsa,padding)
int len;
unsigned char *from,*to;
RSA *rsa;
int padding;
	{
	int outlen= -1;
	int i;
	RSArefPublicKey RSAkey;
	RSARandomState rnd;
	unsigned char buf[16];

	R_RandomInit(&rnd);
	R_GetRandomBytesNeeded((unsigned int *)&i,&rnd);
	while (i > 0)
		{
		RAND_bytes(buf,16);
		R_RandomUpdate(&rnd,buf,(unsigned int)((i>16)?16:i));
		i-=16;
		}

	if (!RSAref_Public_eay2ref(rsa,&RSAkey))
		goto err;
	if ((i=RSAPublicEncrypt(to,&outlen,from,len,&RSAkey,&rnd)) != 0)
		{
		RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,i);
		outlen= -1;
		goto err;
		}
err:
	memset(&RSAkey,0,sizeof(RSAkey));
	R_RandomFinal(&rnd);
	memset(&rnd,0,sizeof(rnd));
	return(outlen);
	}
Commit	Line	Data
d02b48c6	1	/* rsaref/rsaref.c */
58964a49	2	/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
d02b48c6 RE	3	* All rights reserved.
	4	*
	5	* This package is an SSL implementation written
	6	* by Eric Young (eay@cryptsoft.com).
	7	* The implementation was written so as to conform with Netscapes SSL.
	8	*
	9	* This library is free for commercial and non-commercial use as long as
	10	* the following conditions are aheared to. The following conditions
	11	* apply to all code found in this distribution, be it the RC4, RSA,
	12	* lhash, DES, etc., code; not just the SSL code. The SSL documentation
	13	* included with this distribution is covered by the same copyright terms
	14	* except that the holder is Tim Hudson (tjh@cryptsoft.com).
	15	*
	16	* Copyright remains Eric Young's, and as such any Copyright notices in
	17	* the code are not to be removed.
	18	* If this package is used in a product, Eric Young should be given attribution
	19	* as the author of the parts of the library used.
	20	* This can be in the form of a textual message at program startup or
	21	* in documentation (online or textual) provided with the package.
	22	*
	23	* Redistribution and use in source and binary forms, with or without
	24	* modification, are permitted provided that the following conditions
	25	* are met:
	26	* 1. Redistributions of source code must retain the copyright
	27	* notice, this list of conditions and the following disclaimer.
	28	* 2. Redistributions in binary form must reproduce the above copyright
	29	* notice, this list of conditions and the following disclaimer in the
	30	* documentation and/or other materials provided with the distribution.
	31	* 3. All advertising materials mentioning features or use of this software
	32	* must display the following acknowledgement:
	33	* "This product includes cryptographic software written by
	34	* Eric Young (eay@cryptsoft.com)"
	35	* The word 'cryptographic' can be left out if the rouines from the library
	36	* being used are not cryptographic related :-).
	37	* 4. If you include any Windows specific code (or a derivative thereof) from
	38	* the apps directory (application code) you must include an acknowledgement:
	39	* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
	40	*
	41	* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
	42	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	43	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	44	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
	45	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	46	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	47	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	48	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	49	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	50	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	51	* SUCH DAMAGE.
	52	*
	53	* The licence and distribution terms for any publically available version or
	54	* derivative of this code cannot be changed. i.e. this code cannot simply be
	55	* copied and put under another distribution licence
	56	* [including the GNU Public Licence.]
	57	*/
	58
	59	#include <stdio.h>
	60	#include "cryptlib.h"
	61	#include "bn.h"
	62	#include "rsa.h"
	63	#include "rsaref.h"
	64	#include "rand.h"
	65
	66	/*
67	* RSAREFerr(RSAREF_F_RSA_REF_BN2BIN,RSAREF_R_CONTENT_ENCODING);
68	* RSAREFerr(RSAREF_F_RSA_REF_PRIVATE_DECRYPT,RSAREF_R_DATA);
69	* RSAREFerr(RSAREF_F_RSA_REF_PRIVATE_ENCRYPT,RSAREF_R_DIGEST_ALGORITHM);
70	* RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_DECRYPT,RSAREF_R_ENCODING);
71	* RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_KEY);
72	* RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_KEY_ENCODING);
73	* RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_LEN);
74	* RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_MODULUS_LEN);
75	* RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_NEED_RANDOM);
76	* RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_PRIVATE_KEY);
77	* RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_PUBLIC_KEY);
78	* RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_SIGNATURE);
79	* RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_SIGNATURE_ENCODING);
80	* RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_ENCRYPTION_ALGORITHM);
81	* RSAREFerr(RSAREF_F_RSAREF_BN2BIN,ERR_R_BN_LIB);
82	*/
83
84	#ifndef NOPROTO
85	static int RSAref_bn2bin(BIGNUM * from, unsigned char* to, int max);
86	#ifdef undef
87	static BIGNUM* RSAref_bin2bn(unsigned char* from, BIGNUM * to, int max);
88	#endif
89	static int RSAref_Public_eay2ref(RSA * from, RSArefPublicKey * to);
90	static int RSAref_Private_eay2ref(RSA * from, RSArefPrivateKey * to);
91	int RSA_ref_private_decrypt(int len, unsigned char *from,
92	unsigned char to, RSA rsa, int padding);
93	int RSA_ref_private_encrypt(int len, unsigned char *from,
94	unsigned char to, RSA rsa, int padding);
95	int RSA_ref_public_encrypt(int len, unsigned char *from,
96	unsigned char to, RSA rsa, int padding);
97	int RSA_ref_public_decrypt(int len, unsigned char *from,
98	unsigned char to, RSA rsa, int padding);
99	static int BN_ref_mod_exp(BIGNUM r,BIGNUM a,BIGNUM p,BIGNUM m, BN_CTX *ctx);
100	static int RSA_ref_mod_exp(BIGNUM r0, BIGNUM I, RSA *rsa);
101	#else
102
103	static int RSAref_bn2bin();
104	#ifdef undef
105	static BIGNUM* RSAref_bin2bn();
106	#endif
107	static int RSAref_Public_eay2ref();
108	static int RSAref_Private_eay2ref();
109	static int BN_ref_mod_exp();
110	static int RSA_ref_mod_exp();
111	int RSA_ref_private_decrypt();
112	int RSA_ref_private_encrypt();
113	int RSA_ref_public_encrypt();
114	int RSA_ref_public_decrypt();
115	static int BN_ref_mod_exp();
116	static int RSA_ref_mod_exp();
117	#endif
118
119	static RSA_METHOD rsa_pkcs1_ref_meth={
120	"RSAref PKCS#1 RSA",
121	RSA_ref_public_encrypt,
122	RSA_ref_public_decrypt,
123	RSA_ref_private_encrypt,
124	RSA_ref_private_decrypt,
125	RSA_ref_mod_exp,
126	BN_ref_mod_exp,
127	NULL,
128	NULL,
58964a49 RE	129	0,
58964a49 RE	130	NULL,
d02b48c6 RE	131	};
	132
	133	RSA_METHOD *RSA_PKCS1_RSAref()
	134	{
	135	return(&rsa_pkcs1_ref_meth);
	136	}
	137
	138	static int RSA_ref_mod_exp(r0, I, rsa)
	139	BIGNUM *r0;
	140	BIGNUM *I;
	141	RSA *rsa;
	142	{
	143	RSAREFerr(RSAREF_F_RSA_REF_MOD_EXP,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
	144	return(0);
	145	}
	146
	147	static int BN_ref_mod_exp(r,a,p,m,ctx)
	148	BIGNUM r,a,p,m;
	149	BN_CTX *ctx;
	150	{
	151	RSAREFerr(RSAREF_F_BN_REF_MOD_EXP,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
	152	return(0);
	153	}
	154
	155	static int RSAref_bn2bin(from,to,max)
	156	BIGNUM *from;
	157	unsigned char to; / [max] */
	158	int max;
	159	{
	160	int i;
	161
	162	i=BN_num_bytes(from);
	163	if (i > max)
	164	{
	165	RSAREFerr(RSAREF_F_RSAREF_BN2BIN,RSAREF_R_LEN);
	166	return(0);
	167	}
	168
	169	memset(to,0,(unsigned int)max);
	170	if (!BN_bn2bin(from,&(to[max-i])))
	171	return(0);
	172	return(1);
	173	}
	174
	175	#ifdef undef
	176	static BIGNUM *RSAref_bin2bn(from,to,max)
	177	unsigned char from; / [max] */
	178	BIGNUM *to;
	179	int max;
	180	{
	181	int i;
	182	BIGNUM *ret;
	183
	184	for (i=0; i<max; i++)
	185	if (from[i]) break;
	186
	187	ret=BN_bin2bn(&(from[i]),max-i,to);
	188	return(ret);
	189	}
	190
	191	static int RSAref_Public_ref2eay(from,to)
	192	RSArefPublicKey *from;
	193	RSA *to;
	194	{
195	to->n=RSAref_bin2bn(from->m,NULL,RSAref_MAX_LEN);
196	to->e=RSAref_bin2bn(from->e,NULL,RSAref_MAX_LEN);
197	if ((to->n == NULL) \|\| (to->e == NULL)) return(0);
198	return(1);
199	}
200	#endif
201
202	static int RSAref_Public_eay2ref(from,to)
203	RSA *from;
204	RSArefPublicKey *to;
205	{
206	to->bits=BN_num_bits(from->n);
207	if (!RSAref_bn2bin(from->n,to->m,RSAref_MAX_LEN)) return(0);
208	if (!RSAref_bn2bin(from->e,to->e,RSAref_MAX_LEN)) return(0);
209	return(1);
210	}
211
212	#ifdef undef
213	static int RSAref_Private_ref2eay(from,to)
214	RSArefPrivateKey *from;
215	RSA *to;
216	{
217	if ((to->n=RSAref_bin2bn(from->m,NULL,RSAref_MAX_LEN)) == NULL)
218	return(0);
219	if ((to->e=RSAref_bin2bn(from->e,NULL,RSAref_MAX_LEN)) == NULL)
220	return(0);
221	if ((to->d=RSAref_bin2bn(from->d,NULL,RSAref_MAX_LEN)) == NULL)
222	return(0);
223	if ((to->p=RSAref_bin2bn(from->prime[0],NULL,RSAref_MAX_PLEN)) == NULL)
224	return(0);
225	if ((to->q=RSAref_bin2bn(from->prime[1],NULL,RSAref_MAX_PLEN)) == NULL)
226	return(0);
227	if ((to->dmp1=RSAref_bin2bn(from->pexp[0],NULL,RSAref_MAX_PLEN))
228	== NULL)
229	return(0);
230	if ((to->dmq1=RSAref_bin2bn(from->pexp[1],NULL,RSAref_MAX_PLEN))
231	== NULL)
232	return(0);
233	if ((to->iqmp=RSAref_bin2bn(from->coef,NULL,RSAref_MAX_PLEN)) == NULL)
234	return(0);
235	return(1);
236	}
237	#endif
238
239	static int RSAref_Private_eay2ref(from,to)
240	RSA *from;
241	RSArefPrivateKey *to;
242	{
243	to->bits=BN_num_bits(from->n);
244	if (!RSAref_bn2bin(from->n,to->m,RSAref_MAX_LEN)) return(0);
245	if (!RSAref_bn2bin(from->e,to->e,RSAref_MAX_LEN)) return(0);
246	if (!RSAref_bn2bin(from->d,to->d,RSAref_MAX_LEN)) return(0);
247	if (!RSAref_bn2bin(from->p,to->prime[0],RSAref_MAX_PLEN)) return(0);
248	if (!RSAref_bn2bin(from->q,to->prime[1],RSAref_MAX_PLEN)) return(0);
249	if (!RSAref_bn2bin(from->dmp1,to->pexp[0],RSAref_MAX_PLEN)) return(0);
250	if (!RSAref_bn2bin(from->dmq1,to->pexp[1],RSAref_MAX_PLEN)) return(0);
251	if (!RSAref_bn2bin(from->iqmp,to->coef,RSAref_MAX_PLEN)) return(0);
252	return(1);
253	}
254
255	int RSA_ref_private_decrypt(len,from,to,rsa,padding)
256	int len;
257	unsigned char from,to;
258	RSA *rsa;
259	int padding;
260	{
261	int i,outlen= -1;
262	RSArefPrivateKey RSAkey;
263
264	if (!RSAref_Private_eay2ref(rsa,&RSAkey))
265	goto err;
266	if ((i=RSAPrivateDecrypt(to,&outlen,from,len,&RSAkey)) != 0)
267	{
268	RSAREFerr(RSAREF_F_RSA_REF_PRIVATE_DECRYPT,i);
269	outlen= -1;
270	}
271	err:
272	memset(&RSAkey,0,sizeof(RSAkey));
273	return(outlen);
274	}
275
276	int RSA_ref_private_encrypt(len,from,to,rsa,padding)
277	int len;
278	unsigned char from,to;
279	RSA *rsa;
280	int padding;
281	{
282	int i,outlen= -1;
283	RSArefPrivateKey RSAkey;
284
285	if (!RSAref_Private_eay2ref(rsa,&RSAkey))
286	goto err;
287	if ((i=RSAPrivateEncrypt(to,&outlen,from,len,&RSAkey)) != 0)
288	{
289	RSAREFerr(RSAREF_F_RSA_REF_PRIVATE_ENCRYPT,i);
290	outlen= -1;
291	}
292	err:
293	memset(&RSAkey,0,sizeof(RSAkey));
294	return(outlen);
295	}
296
297	int RSA_ref_public_decrypt(len,from,to,rsa,padding)
298	int len;
299	unsigned char from,to;
300	RSA *rsa;
301	int padding;
302	{
303	int i,outlen= -1;
304	RSArefPublicKey RSAkey;
305
306	if (!RSAref_Public_eay2ref(rsa,&RSAkey))
307	goto err;
308	if ((i=RSAPublicDecrypt(to,&outlen,from,len,&RSAkey)) != 0)
309	{
310	RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_DECRYPT,i);
311	outlen= -1;
312	}
313	err:
314	memset(&RSAkey,0,sizeof(RSAkey));
315	return(outlen);
316	}
317
318	int RSA_ref_public_encrypt(len,from,to,rsa,padding)
319	int len;
320	unsigned char from,to;
321	RSA *rsa;
322	int padding;
323	{
324	int outlen= -1;
325	int i;
326	RSArefPublicKey RSAkey;
327	RSARandomState rnd;
328	unsigned char buf[16];
329
330	R_RandomInit(&rnd);
331	R_GetRandomBytesNeeded((unsigned int *)&i,&rnd);
332	while (i > 0)
333	{
334	RAND_bytes(buf,16);
335	R_RandomUpdate(&rnd,buf,(unsigned int)((i>16)?16:i));
336	i-=16;
337	}
338
339	if (!RSAref_Public_eay2ref(rsa,&RSAkey))
340	goto err;
341	if ((i=RSAPublicEncrypt(to,&outlen,from,len,&RSAkey,&rnd)) != 0)
342	{
343	RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,i);
344	outlen= -1;
345	goto err;
346	}
347	err:
348	memset(&RSAkey,0,sizeof(RSAkey));
349	R_RandomFinal(&rnd);
350	memset(&rnd,0,sizeof(rnd));
351	return(outlen);
352	}
353